CAS OpenIR
Improve titanate reduction by electro-deoxidation of Ca3Ti2O7 precursor in molten CaCl2
Wang, Dong1,2,3; Pang, Sheng4; Zhou, Chun-yue4; Peng, Yan4; Wang, Zhi1,3,4; Gong, Xu-zhong1,3,4
2020-12-01
Source PublicationINTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
Volume27Issue:12Pages:1618-1625
AbstractThe low O2- diffusion rate in the electro-deoxidation of titanium containing compounds by either the OS process or the FFC process leads to a low reaction speed and a low current efficiency. In this study, Ca3Ti2O7 was used as a precursor to improve the reduction speed of titanium. Because of the greater number of "diffusion channels" created in cathode as Ca2+ liberates from Ca3Ti2O7 precursor in the electro-deoxidation process, the O2- diffusion rate was improved significantly by using Ca3Ti2O7 instead of CaTiO3 as precursor. Parallel constant voltage electrolysis (3.2 V) confirms that Ca3Ti2O7 and CaTiO3 are reduced simultaneously because of their similar crystal structures. However, the reduction area of Ca3Ti2O7 spreads much faster than that of CaTiO3, indicating a difference in the O2- diffusion rate. Constant voltage cyclic voltammetry (CV) and theoretical analysis of the crystal structure were also conducted to compare the differences between Ca3Ti2O7 and CaTiO3. The results indicate that using a precursor with a greater number of soluble cations, titanium reduction speed can be greatly improved in the electro-deoxidation process. Finally, a new electrolysis method for converting and recycling excess CaO from the Ca3Ti2O7 precursor was proposed.
Keywordcalcium titanate Ca3Ti2O7 molten calcium chloride solid-state reaction reaction speed
DOI10.1007/s12613-020-2165-2
Language英语
WOS KeywordELECTROCHEMICAL REDUCTION ; TITANIUM-DIOXIDE ; METAL ; TIO2 ; CA4TI3O10 ; CATIO3 ; MELT
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS IDWOS:000603567900005
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43049
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhi
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341119, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Mfg, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Dong,Pang, Sheng,Zhou, Chun-yue,et al. Improve titanate reduction by electro-deoxidation of Ca3Ti2O7 precursor in molten CaCl2[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2020,27(12):1618-1625.
APA Wang, Dong,Pang, Sheng,Zhou, Chun-yue,Peng, Yan,Wang, Zhi,&Gong, Xu-zhong.(2020).Improve titanate reduction by electro-deoxidation of Ca3Ti2O7 precursor in molten CaCl2.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,27(12),1618-1625.
MLA Wang, Dong,et al."Improve titanate reduction by electro-deoxidation of Ca3Ti2O7 precursor in molten CaCl2".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 27.12(2020):1618-1625.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang, Dong]'s Articles
[Pang, Sheng]'s Articles
[Zhou, Chun-yue]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Dong]'s Articles
[Pang, Sheng]'s Articles
[Zhou, Chun-yue]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Dong]'s Articles
[Pang, Sheng]'s Articles
[Zhou, Chun-yue]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.